15/97
5.3
Description and elimination of errors
After occurrence of a fault the cooling / heating switches off. The standby
cooling takes place after the rotor is at standstill and the lid is closed.
During a fault the lid can be opened after the rotor is at standstill.
TACHO - ERROR 1 wait 3:00
During centrifugation the speedometer pulses of the speed sensor
(B4) on top of the motor are interrupted.
The rotor slows down braked until it stops.
No further user operation possible.
After the rotor is at standstill and the 3 minutes have elapsed the
lid lock will be released and the lid can be opened.
•
Reset error code:
−
Open the lid.
−
Switch off the mains switch (switch position "0").
−
Wait at least 10 seconds.
−
Turn the rotor vigorously by hand.
−
Switch on the mains switch again (switch position "
Ι
").
The rotor must turn during switch-on.
•
Speed sensor (B4) on top of the motor defective or loose
contact on plug.
Check the function of the speed sensor (B4), see pg. 62,
chapter 6.17, item 6.
Measure supply voltage on plug S602 / Electronics (A1)
pin 2 – pin 3 (+14-18 VDC).
Measure speedometer pulses on plug S602 / Electronics (A1)
pin 2 - pin 4 (signal).
•
Electronics (A1) is defective.
Содержание ROTINA 420
Страница 1: ...06 08 Andreas Hettich GmbH Co KG AR4701EN ROTINA 420 ROTINA 420 R Repair instructions ...
Страница 78: ...77 97 Fig 2 Fig 3 3 1 5 4 6 7 a b d 13 16 18 17 19 21 22 30 25 23 38 21 20 b a c d ...
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Страница 95: ...94 97 11 3 2 Connecting diagram ROTINA 420 420 R ...
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